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WO1999053870A1 - Knee hinge prosthesis with wear-resistant device for guiding the patellar components - Google Patents

Knee hinge prosthesis with wear-resistant device for guiding the patellar components Download PDF

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Publication number
WO1999053870A1
WO1999053870A1 PCT/EP1999/002757 EP9902757W WO9953870A1 WO 1999053870 A1 WO1999053870 A1 WO 1999053870A1 EP 9902757 W EP9902757 W EP 9902757W WO 9953870 A1 WO9953870 A1 WO 9953870A1
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WO
WIPO (PCT)
Prior art keywords
component
plate section
patellar
anterior plate
bearing surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1999/002757
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German (de)
French (fr)
Inventor
Dirk Bädorf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ceramtec GmbH
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Ceramtec GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ceramtec GmbH filed Critical Ceramtec GmbH
Priority to KR1020007011543A priority Critical patent/KR20010042799A/en
Priority to EP99920763A priority patent/EP1071384A1/en
Priority to US09/673,067 priority patent/US6383222B1/en
Priority to JP2000544281A priority patent/JP2002512078A/en
Publication of WO1999053870A1 publication Critical patent/WO1999053870A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/38—Joints for elbows or knees
    • A61F2/3877—Patellae or trochleae
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/02—Inorganic materials
    • A61L27/10—Ceramics or glasses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2400/00—Materials characterised by their function or physical properties
    • A61L2400/18—Modification of implant surfaces in order to improve biocompatibility, cell growth, fixation of biomolecules, e.g. plasma treatment

Definitions

  • the invention relates to a knee joint prosthesis according to the preamble of claim 1.
  • a knee joint prosthesis with a tibial component which is attached to the proximal tibia and a femoral component, which is attached to the distal femur and has condylar bearing sections that articulate with condylar bearing sections of the tibial component.
  • this knee joint prosthesis consists of a patellar component which is attached to the patella and has a patellar bearing surface which touches an anterior plate section of the femoral component when the prosthetic knee joint is fully extended.
  • the femoral component with the anterior plate section is a one-piece object made of a metal or a metal alloy such as a cobalt-chromium-molybdenum alloy, titanium or a titanium alloy.
  • the patellar bearing surface is made of a plastic, e.g. B. Ultra high molecular weight polyethylene.
  • Knee joint prostheses which have no patellar component. This is where the natural patella, i.e. H. the bone, directly an anterior plate section of the femoral component with the prosthetic knee joint fully extended.
  • the invention has for its object to improve a knee joint prosthesis according to the preambles of claims 1 or 3 such that less wear occurs on the patellar bearing surface or the natural patella. - 2 -
  • anterior plate section and the bearing surface of the patellar component consist of one of the following sliding pairings:
  • the anterior plate section is advantageously designed as an insert in the femoral component.
  • the object on which the invention is based is achieved in a second embodiment by the features of claim 3.
  • the knee joint prosthesis has no patellar component.
  • the natural patella i.e. H. the bone directly touches the anterior plate section of the femoral component.
  • the ceramic in all its forms consists of aluminum oxide, zirconium oxide, mixed ceramic made of aluminum oxide or zirconium oxide or of other biocompatible ceramics or coatings. Further features of the invention emerge from the figures, which are described below. It shows:
  • Fig. 1 shows schematically a knee joint prosthesis with a tibial component, a meniscus and a femoral component and
  • FIG. 2 as a section the femoral component of FIG. 1 with adjacent patellar component.
  • FIG. 1 schematically shows a knee joint prosthesis according to the invention with a tibial component 1 which is attached to the proximal tibia (not shown).
  • This tibial component 1 has tibial bearing sections 4, which interact in an articulated manner via a meniscus 9 with condylar bearing sections 3 of the femoral component 2.
  • the femoral component 2 has an anterior plate section 8, which in one embodiment cooperates with a patellar bearing surface of a patellar component which is attached to the patella, and in another embodiment directly with the patella, i. H. the bone, cooperates or serves as a sliding surface for this.
  • FIG. 2 shows a section of the femoral component 2 according to FIG. 1 with an adjacent patellar component 5.
  • the patellar component 5 has a bearing surface 7 which slides on the anterior plate section 8.
  • the anterior plate section 8 is made of metal and the bearing surface 7 of the patellar component 5 is also made of metal.
  • the anterior plate section 8 and the bearing surface 7 of the patellar component 5 are advantageously made of ceramic. Wear is almost impossible here.
  • the plate section 8 is expediently designed as an insert in the femoral component 2. - 4 -
  • the anterior plate section 8 is made of ceramic and the bearing surface 7 of the patellar component 5 is made of plastic, preferably polyethylene.
  • the plate section 8 is expediently designed as an insert. The attachment of the insert in all embodiments can be done by gluing, shrinking, clamping, soldering, welding or other possible types of attachment.
  • the anterior plate section 8 is a ceramic insert and the patella directly contacts the plate section 8.
  • the ceramics used are preferably aluminum oxide, zirconium oxide, mixed ceramics made of aluminum oxide or zirconium oxide or other biocompatible ceramics or coatings.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Vascular Medicine (AREA)
  • Cardiology (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Dermatology (AREA)
  • Medicinal Chemistry (AREA)
  • Epidemiology (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The invention relates to a knee hinge prosthesis with a tibial component (1) that is fixed to the proximal tibia, a femoral component (2) that is fixed to the distal femur, condylar bearing sections (3) cooperating in an articulated manner with the tibial bearing sections (4) of the tibial components (1) and a patellar component (5) that is fixed to the patella (6) and has a patellar bearing surface (7) which comes into contact with an anterior plate section (8) of the femoral component (2). In order to reduce wear, the invention provides that the anterior plate section (8) and the bearing surface (7) of the patellar component (5) consist of one pair of the following gliding elements: Metallic anterior plate section (8) and metallic bearing surface (7) of the patellar component (5), or ceramic anterior plate section (8) and ceramic bearing surface (7) of the patellar component (5) or ceramic anterior plate section (8) and bearing surface (7) of the patellar component (5) made of plastic.

Description

Kniegelenkprothese mit verschleißarmer Bahn führung der patellaren Komponente Knee joint prosthesis with low-wear pathway for the patellar component

Die Erfindung betrifft eine Kniegelenkprothese nach dem Oberbegriff des An- spruchs 1.The invention relates to a knee joint prosthesis according to the preamble of claim 1.

Aus dem deutschen Gebrauchsmuster 89 01 097.3 ist eine Kniegelenkprothese mit einer tibialen Komponente bekannt, die an der proximalen Tibia befestigt ist und einer femoralen Komponente, die an dem distalen Femur befestigt ist und kondylare Lagerabschnitte aufweist, die mit kondylaren Lagerabschnitten der tibialen Komponente gelenkig zusammenwirken. Außerdem besteht diese Kniegelenkprothese aus einer patellaren Komponente, die an der Patella befestigt ist und eine patellare Lagerfläche aufweist, die einen anterioren Plattenabschnitt der femoralen Komponente bei voll ausgestrecktem prothetischen Kniegelenk berührt. Die femorale Komponente mit dem anterioren Plattenabschnitt ist ein einstückiger Gegenstand aus einem Metall oder einer Metalllegierung wie einer Kobalt-Chrom-Molybdän-Legierung, Titan oder einer Titanlegierung. Die patellare Lagerfläche ist aus einem Kunststoff gefertigt, z. B. Ultrahochmolekularge- wicht-Polyethylen.From German utility model 89 01 097.3 a knee joint prosthesis with a tibial component is known, which is attached to the proximal tibia and a femoral component, which is attached to the distal femur and has condylar bearing sections that articulate with condylar bearing sections of the tibial component. In addition, this knee joint prosthesis consists of a patellar component which is attached to the patella and has a patellar bearing surface which touches an anterior plate section of the femoral component when the prosthetic knee joint is fully extended. The femoral component with the anterior plate section is a one-piece object made of a metal or a metal alloy such as a cobalt-chromium-molybdenum alloy, titanium or a titanium alloy. The patellar bearing surface is made of a plastic, e.g. B. Ultra high molecular weight polyethylene.

Es sind auch Kniegelenkprothesen bekannt, die keine patellare Komponente aufweisen. Hier berührt die natürliche Patella, d. h. der Knochen, direkt einen anterioren Plattenabschnitt der femoralen Komponente bei voll ausgestrecktem prothetischen Kniegelenk.Knee joint prostheses are also known which have no patellar component. This is where the natural patella, i.e. H. the bone, directly an anterior plate section of the femoral component with the prosthetic knee joint fully extended.

Nachteilig hieran ist, daß es an der patellaren Lagerfläche oder an der natürlichen Patella oft zu einem sehr großen Verschleiß kommt, wodurch eine Austauschoperation erforderlich werden kann.The disadvantage of this is that there is often a great deal of wear on the patellar bearing surface or on the natural patella, as a result of which an exchange operation may be necessary.

Der Erfindung liegt die Aufgabe zugrunde, eine Kniegelenkprothese nach den Oberbegriffen der Ansprüche 1 oder 3 derart zu verbessern, daß weniger Verschleiß an der patellaren Lagerfläche oder der natürlichen Patella auftritt. - 2 -The invention has for its object to improve a knee joint prosthesis according to the preambles of claims 1 or 3 such that less wear occurs on the patellar bearing surface or the natural patella. - 2 -

Erfindungsgemäß wird diese Aufgabe in einer ersten Ausführungsform durch die Merkmale des Anspruchs 1 gelöst.According to the invention, this object is achieved in a first embodiment by the features of claim 1.

Dadurch, daß der anteriore Plattenabschnitt und die Lagerfläche der patellaren Komponente aus einer der folgenden Gleitpaarungen bestehen:The fact that the anterior plate section and the bearing surface of the patellar component consist of one of the following sliding pairings:

- metallischer anteriorer Plattenabschnitt und metallische Lagerfläche der patellaren Komponente oder- metallic anterior plate section and metallic bearing surface of the patellar component or

- keramischer anteriorer Plattenabschnitt und keramische Lagerfläche der patellaren Komponente oder - keramischer anteriorer Plattenabschnitt und Lagerfläche der patellaren Komponente aus Kunststoff, ist eine verschleißarme Gleitpaarung gefunden, die eine Austauschoperation wesentlich seltener erforderlich macht.- Ceramic anterior plate section and ceramic bearing surface of the patellar component or - Ceramic anterior plate section and bearing surface of the patellar component made of plastic, a low-wear sliding pairing has been found, which makes an exchange operation much less necessary.

Vorteilhafterweise ist der anteriore Plattenabschnitt als Einsatz in der femoralen Komponente ausgebildet.The anterior plate section is advantageously designed as an insert in the femoral component.

Erfindungsgemäß wird die der Erfindung zugrundeliegende Aufgabe in einer zweiten Ausführungsform durch die Merkmale des Anspruchs 3 gelöst.According to the invention, the object on which the invention is based is achieved in a second embodiment by the features of claim 3.

Dadurch, daß der anteriore Plattenabschnitt ein Keramikeinsatz ist, ist der Verschleiß gleichfalls gemindert, so daß eine Austauschoperation wesentlich seltener erforderlich ist. In dieser Ausführungsform weist die Kniegelenkprothese keine patellare Komponente auf. Die natürliche Patella, d. h. der Knochen, be- rührt direkt den anterioren Plattenabschnitt der femoralen Komponente.Because the anterior plate section is a ceramic insert, wear is also reduced, so that an exchange operation is required less frequently. In this embodiment, the knee joint prosthesis has no patellar component. The natural patella, i.e. H. the bone directly touches the anterior plate section of the femoral component.

Vorteilhafterweise besteht die Keramik in allen Auführungsformen aus Aluminiumoxid, Zirkonoxid, Mischkeramik aus Aluminiumoxid oder Zirkonoxid oder aus anderen biokompatiblen Keramiken oder Beschichtungen. Weitere Merkmale der Erfindung ergeben sich aus den Figuren, die nachfolgend beschrieben sind. Es zeigt:Advantageously, the ceramic in all its forms consists of aluminum oxide, zirconium oxide, mixed ceramic made of aluminum oxide or zirconium oxide or of other biocompatible ceramics or coatings. Further features of the invention emerge from the figures, which are described below. It shows:

Fig. 1 schematisch eine Kniegelenkprothese mit einer tibialen Komponente, einem Meniskus und einer femoralen Komponente undFig. 1 shows schematically a knee joint prosthesis with a tibial component, a meniscus and a femoral component and

Fig. 2 als Schnitt die femorale Komponente nach Fig. 1 mit angrenzender patellaren Komponente.Fig. 2 as a section the femoral component of FIG. 1 with adjacent patellar component.

Fig. 1 zeigt schematisch eine erfindungsgemäße Kniegelenkprothese mit einer tibialen Komponente 1 , die an der proximalen Tibia befestigt ist (nicht gezeigt). Diese tibiale Komponente 1 weist tibiale Lagerabschnitte 4 auf, die über einen Meniskus 9 mit kondylaren Lagerabschnitten 3 der femoralen Komponente 2 gelenkig zusammenwirken. Außerdem weist die femorale Komponente 2 einen anterioren Plattenabschnitt 8 auf, der in einer Ausführungsform mit einer patellaren Lagerfläche einer patellaren Komponente, die an der Patella befestigt ist, zusammenwirkt und in einer anderen Ausführungsform direkt mit der Patella, d. h. dem Knochen, zusammenwirkt bzw. als Gleitfläche für diese dient.1 schematically shows a knee joint prosthesis according to the invention with a tibial component 1 which is attached to the proximal tibia (not shown). This tibial component 1 has tibial bearing sections 4, which interact in an articulated manner via a meniscus 9 with condylar bearing sections 3 of the femoral component 2. In addition, the femoral component 2 has an anterior plate section 8, which in one embodiment cooperates with a patellar bearing surface of a patellar component which is attached to the patella, and in another embodiment directly with the patella, i. H. the bone, cooperates or serves as a sliding surface for this.

Fig. 2 zeigt als Schnitt die femorale Komponente 2 nach Fig. 1 mit angrenzender patellarer Komponente 5. Die patellare Komponente 5 weist eine Lagerfläche 7 auf, die auf dem anterioren Plattenabschnitt 8 gleitet.FIG. 2 shows a section of the femoral component 2 according to FIG. 1 with an adjacent patellar component 5. The patellar component 5 has a bearing surface 7 which slides on the anterior plate section 8.

Zur Verschleißreduzierung besteht in einer Ausführungsform der anteriore Plat- tenabschnitt 8 aus Metall und die Lagerfläche 7 der patellaren Komponente 5 ebenfalls aus Metall.To reduce wear, in one embodiment the anterior plate section 8 is made of metal and the bearing surface 7 of the patellar component 5 is also made of metal.

In einer anderen Ausführungsform besteht vorteilhafterweise der anteriore Plattenabschnitt 8 und die Lagerfläche 7 der patellaren Komponente 5 aus Keramik. Hier ist ein Verschleiß nahezu ausgeschlossen. Der Plattenabschnitt 8 ist zweckmäßigerweise als Einsatz in der femoralen Komponente 2 ausgebildet. - 4 -In another embodiment, the anterior plate section 8 and the bearing surface 7 of the patellar component 5 are advantageously made of ceramic. Wear is almost impossible here. The plate section 8 is expediently designed as an insert in the femoral component 2. - 4 -

ln einer weiteren bevorzugten Ausführungsform besteht der anteriore Plattenabschnitt 8 aus Keramik und die Lagerfläche 7 der patellaren Komponente 5 aus Kunststoff, bevorzugt Polyethylen. Auch hier ist der Plattenabschnitt 8 sinnvollerweise als Einsatz ausgebildet. Die Befestigung des Einsatzes in allen Ausführungsformen kann durch Kleben, Schrumpfen, Klemmen, Löten, Schweißen oder andere mögliche Befestigungsarten erfolgen.In a further preferred embodiment, the anterior plate section 8 is made of ceramic and the bearing surface 7 of the patellar component 5 is made of plastic, preferably polyethylene. Here, too, the plate section 8 is expediently designed as an insert. The attachment of the insert in all embodiments can be done by gluing, shrinking, clamping, soldering, welding or other possible types of attachment.

In einer weiteren Ausführungsform ist der anteriore Plattenabschnitt 8 ein Keramikeinsatz und die Patella berührt direkt den Plattenabschnitt 8.In a further embodiment, the anterior plate section 8 is a ceramic insert and the patella directly contacts the plate section 8.

Die verwendeten Keramiken sind bevorzugt Aluminiumoxid, Zirkonoxid, Mischkeramiken aus Aluminiumoxid oder Zirkonoxid oder andere biokompatible Keramiken oder Beschichtungen. The ceramics used are preferably aluminum oxide, zirconium oxide, mixed ceramics made of aluminum oxide or zirconium oxide or other biocompatible ceramics or coatings.

Claims

- 5 -Ansprüche - 5 claims 1. Kniegelenkprothese mit einer tibialen Komponente (1 ), die an der proximalen Tibia befestigt ist, und einer femoralen Komponente (2), die an dem distalen Femur befestigt ist und kondylare Lagerabschnitte (3) aufweist, die mit tibialen Lagerabschnitten (4) der tibialen Komponente (1 ) gelenkig zusammenwirken, und einer patellaren Komponente (5), die an der Patella (6) befestigt ist und eine patellare Lagerfläche (7) aufweist, die einen anterioren Plattenabschnitt (8) der femoralen Komponente (2) berührt, dadurch gekennzeichnet, daß der anteriore Plattenabschnitt (8) und die Lagerfläche (7) der patellaren1. Knee joint prosthesis with a tibial component (1), which is attached to the proximal tibia, and a femoral component (2), which is attached to the distal femur and has condylar bearing sections (3), which with the tibial bearing sections (4) tibial component (1) articulate, and a patellar component (5) which is attached to the patella (6) and has a patellar bearing surface (7) which contacts an anterior plate section (8) of the femoral component (2) characterized in that the anterior plate section (8) and the bearing surface (7) of the patellar Komponente (5) aus einer der folgenden Gleitpaarungen besteht:Component (5) consists of one of the following sliding pairings: - metallischer anteriorer Plattenabschnitt (8) und metallische Lagerfläche (7) der patellaren Komponente (5) oder- Metallic anterior plate section (8) and metallic bearing surface (7) of the patellar component (5) or - keramischer anteriorer Plattenabschnitt (8) und keramische Lagerfläche (7) der patellaren Komponente (5) oder- Ceramic anterior plate section (8) and ceramic bearing surface (7) of the patellar component (5) or - keramischer anteriorer Plattenabschnitt (8) und Lagerfläche (7) der patellaren Komponente (5) aus Kunststoff.- Ceramic anterior plate section (8) and bearing surface (7) of the patellar component (5) made of plastic. 2. Kniegelenkprothese nach Anspruch 1 , dadurch gekennzeichnet, daß der anteriore Plattenabschnitt (8) als Einsatz in der femoralen Komponente (2) ausgebildet ist.2. Knee joint prosthesis according to claim 1, characterized in that the anterior plate section (8) is designed as an insert in the femoral component (2). 3. Kniegelenkprothese mit einer tibialen Komponente (1 ), die an der proximalen Tibia befestigt ist, und einer femoralen Komponente (2), die an dem distalen Femur befestigt ist und kondylare Lagerabschnitte (3) aufweist, die mit tibialen Lagerabschnitten (4) der tibialen Komponente (1 ) gelenkig zusammenwirken, und einer natürlichen Patella, die einen anterioren Plattenabschnitt (8) der femoralen Komponente (2) berührt, dadurch gekennzeichnet, daß der anteriore Plattenabschnitt (8) ein Keramikeinsatz ist. - 6 -3. Knee joint prosthesis with a tibial component (1), which is attached to the proximal tibia, and a femoral component (2), which is attached to the distal femur and has condylar bearing sections (3), which with the tibial bearing sections (4) tibial component (1) articulate and a natural patella that contacts an anterior plate section (8) of the femoral component (2), characterized in that the anterior plate section (8) is a ceramic insert. - 6 - 4. Kniegelenkprothese nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Keramik aus Aluminiumoxid, Zirkonoxid, Mischkeramik aus Aluminiumoxid oder Zirkonoxid oder anderen biokompatiblen Keramiken oder Beschichtungen besteht. 4. Knee joint prosthesis according to one of claims 1 to 3, characterized in that the ceramic consists of aluminum oxide, zirconium oxide, mixed ceramic of aluminum oxide or zirconium oxide or other biocompatible ceramics or coatings.
PCT/EP1999/002757 1998-04-17 1999-04-16 Knee hinge prosthesis with wear-resistant device for guiding the patellar components Ceased WO1999053870A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020007011543A KR20010042799A (en) 1998-04-17 1999-04-16 Knee hinge prosthesis with wear-resistant device for guiding the patellar components
EP99920763A EP1071384A1 (en) 1998-04-17 1999-04-16 Knee hinge prosthesis with wear-resistant device for guiding the patellar components
US09/673,067 US6383222B1 (en) 1998-04-17 1999-04-16 Knee hinge prosthesis with wear-resistant device for guiding the patellar components
JP2000544281A JP2002512078A (en) 1998-04-17 1999-04-16 Knee prosthesis where the patella component is surface guided with slight wear

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816984.1 1998-04-17
DE19816984A DE19816984A1 (en) 1998-04-17 1998-04-17 Low wear knee-joint prosthesis employing a natural or artificial patella

Publications (1)

Publication Number Publication Date
WO1999053870A1 true WO1999053870A1 (en) 1999-10-28

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Family Applications (1)

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PCT/EP1999/002757 Ceased WO1999053870A1 (en) 1998-04-17 1999-04-16 Knee hinge prosthesis with wear-resistant device for guiding the patellar components

Country Status (6)

Country Link
US (1) US6383222B1 (en)
EP (1) EP1071384A1 (en)
JP (1) JP2002512078A (en)
KR (1) KR20010042799A (en)
DE (1) DE19816984A1 (en)
WO (1) WO1999053870A1 (en)

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US7615081B2 (en) * 2002-05-24 2009-11-10 Zimmer, Inc. Femoral components for knee arthroplasty
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US8002840B2 (en) 2004-01-12 2011-08-23 Depuy Products, Inc. Systems and methods for compartmental replacement in a knee
US8535383B2 (en) * 2004-01-12 2013-09-17 DePuy Synthes Products, LLC Systems and methods for compartmental replacement in a knee
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US7338529B1 (en) 2004-03-30 2008-03-04 Biomet Manufacturing Corp. Methods and apparatuses for enhancing prosthetic implant durability
US8852195B2 (en) 2004-07-09 2014-10-07 Zimmer, Inc. Guide templates for surgical implants and related methods
US20080288081A1 (en) * 2007-05-16 2008-11-20 Joel Scrafton Implant articular surface wear reduction system
US7833274B2 (en) * 2007-05-16 2010-11-16 Zimmer, Inc. Knee system and method of making same
KR100822182B1 (en) * 2007-05-22 2008-04-16 충북대학교 산학협력단 Modified Femoral Fascia Superposition for the Treatment of Patellar Dislocation.
US8142511B2 (en) 2010-04-19 2012-03-27 Zimmer, Inc. Bi-material prosthesis component
US9622868B2 (en) 2014-04-28 2017-04-18 Biomet Manufacturing, Llc Convertible pre-partial knee replacement
BR202014024100U2 (en) * 2014-09-29 2020-02-27 Universidade Federal Do Rio Grande Do Sul FEMORAL ISOELASTIC STEM MADE IN POLYMER
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EP1071384A1 (en) 2001-01-31
US6383222B1 (en) 2002-05-07
KR20010042799A (en) 2001-05-25
DE19816984A1 (en) 1999-10-21

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